Sony
FE 300mm F2.8 GM OSS
Sony E Mount
World's lightest 300mm F2.8 — 1470g with XD Linear AF, OSS, and G Master resolution.
$6,999
Launch priceReleased Jan 2024
Sony
FE 400mm F2.8 GM OSS
Sony E Mount
World's lightest 400mm F2.8 — 2895g with 3 fluorite elements, XD Linear AF, and OSS.
$12,000
Launch priceReleased Jun 2018
FE 300mm F2.8 GM OSS is 5.6 years newer.
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Wins
FE 300mm F2.8 GM OSS
Wins
FE 400mm F2.8 GM OSS
4 categories tied
Which would you choose?
TL;DR — Key differences
- AFE 300mm F2.8 GM OSS has lower Weight (1470 g vs 2895 g)
- AFE 300mm F2.8 GM OSS has lower Length (265 mm vs 359 mm)
- AFE 300mm F2.8 GM OSS has lower Min focus distance (200 cm vs 270 cm)
- AFE 300mm F2.8 GM OSS has lower Diameter (124 mm vs 158.1 mm)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareFE 300mm F2.8 GM OSS
⌀124 × 265 mm
1470 g (3.24 lb / 51.85 oz)
Credit card
85.6 × 54 mm
for scale
FE 400mm F2.8 GM OSS
⌀158 × 359 mm
2895 g (6.38 lb / 102.12 oz)
FE 300mm F2.8 GM OSS is 94mm shorter and 34mm narrower than FE 400mm F2.8 GM OSS.
FE 300mm F2.8 GM OSS is 1425 g lighter than FE 400mm F2.8 GM OSS.
Diameter (⌀) is the maximum barrel width; length is measured from the mount to the front of the lens.
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
Why pick one over the other
Reasons to choose the FE 300mm F2.8 GM OSS
- ✓
Special elements
Adds 3 Super ED
- ✓
Weight
1470 g vs 2895 g — lower is better
- ✓
Length
265 mm vs 359 mm — lower is better
- ✓
Min focus distance
200 cm vs 270 cm — lower is better
- ✓
Diameter
124 mm vs 158.1 mm — lower is better
Reasons to choose the FE 400mm F2.8 GM OSS
- ✓
Special elements
Adds 3 Fluorite
Shared specifications
Max aperture (Wide)
Both f/2.8
Max aperture (Tele)
Both f/2.8
Max magnification
Both 0.16 ×
Internal focus
Both support internal focus
Optical stabilization
Both support optical stabilization
OIS effectiveness
Both 5 stops
Pros & cons at a glance
Editorially curated highlights and trade-offs.
FE 300mm F2.8 GM OSS
Pros
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Built-in optical image stabilization
- ✓Weather-sealed construction for outdoor shooting
Cons
- –Premium price point
- –Relatively heavy for extended handheld use
FE 400mm F2.8 GM OSS
Pros
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Built-in optical image stabilization
- ✓Weather-sealed construction for outdoor shooting
Cons
- –Premium price point
- –Relatively heavy for extended handheld use
Decided which one is right for you?
Compare live prices for the FE 300mm F2.8 GM OSS and FE 400mm F2.8 GM OSS at major authorized retailers.
Sony FE 300mm F2.8 GM OSS
Sony FE 400mm F2.8 GM OSS
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.